Letter to William Sydney Thayer, December 31, 1913
Letter to William Sydney Thayer, May 5, 1914
Letter to William Sydney Thayer, August 14, 1914
Letter to William Sydney Thayer, September 4, 1914
Letter to William Sydney Thayer, September 11, 1914
Letter to William Sydney Thayer, November 20, 1914
Letter to William Sydney Thayer, January 6, 1915
Letter to William Sydney Thayer, April 12, 1915
Letter to William Sydney Thayer, April 6, 1916
Letter to William Sydney Thayer, June 23, 1889